Pillow



FIG. 1 is a top plan view of a pillow showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a front, top and left side perspective view. 

The ornamental design for a pillow, substantially as shown and described. 